[Home](./index.md) > [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) > [ExpressionRenderer](./kibana-plugin-plugins-expressions-server.expressionrenderer.md) > [validate](./kibana-plugin-plugins-expressions-server.expressionrenderer.validate.md) ## ExpressionRenderer.validate property Signature: ```typescript readonly validate: () => void | Error; ```